Why did we walk out? I think that persistent phallic or sexual humor is geared toward forcing nervous laughter. If your comedy is so bad that's the only way you can get people laughing, it reflects very poorly on your quality of comedy.
I think it's true of stand up comedians and of movies.
Yeah, avoided that one after reading a review. Plus being from the same people who did 40 Year Old Virgin, which I didn't care for, I wasn't expecting it to be good, despite the previews looking humorous.